1 files changed, 127 insertions, 0 deletions
diff --git a/tests/test-empty-group.t b/tests/test-empty-group.t
new file mode 100644
index 0000000..9dbb33d
--- /dev/null
+++ b/tests/test-empty-group.t
@@ -0,0 +1,127 @@
+#  A          B
+#
+#  3  4       3
+#  |\/|       |\
+#  |/\|       | \
+#  1  2       1  2
+#  \ /        \ /
+#   0          0
+#
+# if the result of the merge of 1 and 2
+# is the same in 3 and 4, no new manifest
+# will be created and the manifest group
+# will be empty during the pull
+#
+# (plus we test a failure where outgoing
+# wrongly reported the number of csets)
+
+  $ hg init a
+  $ cd a
+  $ touch init
+  $ hg ci -A -m 0
+  adding init
+  $ touch x y
+  $ hg ci -A -m 1
+  adding x
+  adding y
+
+  $ hg update 0
+  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
+  $ touch x y
+  $ hg ci -A -m 2
+  adding x
+  adding y
+  created new head
+
+  $ hg merge 1
+  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  (branch merge, don't forget to commit)
+  $ hg ci -A -m m1
+
+  $ hg update -C 1
+  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ hg merge 2
+  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  (branch merge, don't forget to commit)
+  $ hg ci -A -m m2
+  created new head
+
+  $ cd ..
+
+  $ hg clone -r 3 a b
+  adding changesets
+  adding manifests
+  adding file changes
+  added 4 changesets with 3 changes to 3 files
+  updating to branch default
+  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
+
+  $ hg clone -r 4 a c
+  adding changesets
+  adding manifests
+  adding file changes
+  added 4 changesets with 3 changes to 3 files
+  updating to branch default
+  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
+
+  $ hg -R a outgoing b
+  comparing with b
+  searching for changes
+  changeset:   4:1ec3c74fc0e0
+  tag:         tip
+  parent:      1:79f9e10cd04e
+  parent:      2:8e1bb01c1a24
+  user:        test
+  date:        Thu Jan 01 00:00:00 1970 +0000
+  summary:     m2
+  
+  $ hg -R a outgoing c
+  comparing with c
+  searching for changes
+  changeset:   3:d15a0c284984
+  parent:      2:8e1bb01c1a24
+  parent:      1:79f9e10cd04e
+  user:        test
+  date:        Thu Jan 01 00:00:00 1970 +0000
+  summary:     m1
+  
+  $ hg -R b outgoing c
+  comparing with c
+  searching for changes
+  changeset:   3:d15a0c284984
+  tag:         tip
+  parent:      2:8e1bb01c1a24
+  parent:      1:79f9e10cd04e
+  user:        test
+  date:        Thu Jan 01 00:00:00 1970 +0000
+  summary:     m1
+  
+  $ hg -R c outgoing b
+  comparing with b
+  searching for changes
+  changeset:   3:1ec3c74fc0e0
+  tag:         tip
+  parent:      1:79f9e10cd04e
+  parent:      2:8e1bb01c1a24
+  user:        test
+  date:        Thu Jan 01 00:00:00 1970 +0000
+  summary:     m2
+  
+
+  $ hg -R b pull a
+  pulling from a
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 0 changes to 0 files (+1 heads)
+  (run 'hg heads' to see heads, 'hg merge' to merge)
+
+  $ hg -R c pull a
+  pulling from a
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 1 changesets with 0 changes to 0 files (+1 heads)
+  (run 'hg heads' to see heads, 'hg merge' to merge)